C75.bin -

Right-click the file → Properties → Details tab. Look for:

If all fields are empty or only say “Binary File,” proceed with caution. c75.bin

Some HP Support Assistant and Dell Command Update components extract firmware diagnostics as c75.bin. These are deleted after running hardware tests. If the file is located in C:\SWSetup\ (HP) or C:\Windows\Temp\Dell\, it’s almost certainly benign. Right-click the file → Properties → Details tab

High entropy (random-looking data) suggests encryption or compression. Low entropy (repeating patterns) suggests raw machine code or a file system. If all fields are empty or only say

# Install binwalk for deep inspection
binwalk c75.bin

Binwalk will reveal if c75.bin contains hidden file systems (SquashFS, JFFS2) or known compression algorithms (LZMA, Zlib).